1 /*- 2 * Copyright (c) 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94 35 * $FreeBSD: src/sys/isofs/cd9660/cd9660_rrip.c,v 1.17 1999/08/28 00:46:06 peter Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/buf.h> 41 #include <sys/vnode.h> 42 #include <sys/mount.h> 43 #include <sys/kernel.h> 44 45 #include "iso.h" 46 #include "cd9660_node.h" 47 #include "cd9660_rrip.h" 48 #include "iso_rrip.h" 49 50 #include <sys/buf2.h> 51 52 typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana); 53 54 typedef struct { 55 char type[2]; 56 rrt_func_t *func; 57 void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana); 58 int result; 59 } RRIP_TABLE; 60 61 static int cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana); 62 static int cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana); 63 static int cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana); 64 static void cd9660_rrip_defattr(struct iso_directory_record *isodir, 65 ISO_RRIP_ANALYZE *ana); 66 static void cd9660_rrip_defname(struct iso_directory_record *isodir, 67 ISO_RRIP_ANALYZE *ana); 68 static void cd9660_rrip_deftstamp(struct iso_directory_record *isodir, 69 ISO_RRIP_ANALYZE *ana); 70 static int cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana); 71 static int cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana); 72 static int cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana); 73 static int cd9660_rrip_loop(struct iso_directory_record *isodir, 74 ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table); 75 static int cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana); 76 static int cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana); 77 static int cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana); 78 static int cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana); 79 static int cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana); 80 81 /* 82 * POSIX file attribute 83 */ 84 static int 85 cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana) 86 { 87 ana->inop->inode.iso_mode = isonum_733(p->mode); 88 ana->inop->inode.iso_uid = isonum_733(p->uid); 89 ana->inop->inode.iso_gid = isonum_733(p->gid); 90 ana->inop->inode.iso_links = isonum_733(p->links); 91 ana->fields &= ~ISO_SUSP_ATTR; 92 return ISO_SUSP_ATTR; 93 } 94 95 static void 96 cd9660_rrip_defattr(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 97 { 98 /* But this is a required field! */ 99 kprintf("RRIP without PX field?\n"); 100 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 101 } 102 103 /* 104 * Symbolic Links 105 */ 106 static int 107 cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana) 108 { 109 ISO_RRIP_SLINK_COMPONENT *pcomp; 110 ISO_RRIP_SLINK_COMPONENT *pcompe; 111 int error, len, wlen, cont; 112 char *outbuf, *inbuf, *freebuf; 113 114 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component; 115 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length)); 116 len = *ana->outlen; 117 outbuf = ana->outbuf; 118 cont = ana->cont; 119 freebuf = NULL; 120 121 /* 122 * Gathering a Symbolic name from each component with path 123 */ 124 for (; 125 pcomp < pcompe; 126 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ 127 + isonum_711(pcomp->clen))) { 128 129 if (!cont) { 130 if (len < ana->maxlen) { 131 len++; 132 *outbuf++ = '/'; 133 } 134 } 135 cont = 0; 136 137 inbuf = ".."; 138 wlen = 0; 139 140 switch (*pcomp->cflag) { 141 142 case ISO_SUSP_CFLAG_CURRENT: 143 /* Inserting Current */ 144 wlen = 1; 145 break; 146 147 case ISO_SUSP_CFLAG_PARENT: 148 /* Inserting Parent */ 149 wlen = 2; 150 break; 151 152 case ISO_SUSP_CFLAG_ROOT: 153 /* Inserting slash for ROOT */ 154 /* start over from beginning(?) */ 155 outbuf -= len; 156 len = 0; 157 break; 158 159 case ISO_SUSP_CFLAG_VOLROOT: 160 /* Inserting a mount point i.e. "/cdrom" */ 161 /* same as above */ 162 outbuf -= len; 163 len = 0; 164 error = cache_fullpath(NULL, &ana->imp->im_mountp->mnt_ncmountpt, NULL, 165 &inbuf, &freebuf, 0); 166 if (error) 167 goto bad; 168 wlen = strlen(inbuf); 169 break; 170 171 case ISO_SUSP_CFLAG_HOST: 172 /* Inserting hostname i.e. "kurt.tools.de" */ 173 inbuf = hostname; 174 wlen = strlen(hostname); 175 break; 176 177 case ISO_SUSP_CFLAG_CONTINUE: 178 cont = 1; 179 /* FALLTHROUGH */ 180 case 0: 181 /* Inserting component */ 182 wlen = isonum_711(pcomp->clen); 183 inbuf = pcomp->name; 184 break; 185 default: 186 kprintf("RRIP with incorrect flags?"); 187 wlen = ana->maxlen + 1; 188 break; 189 } 190 191 if (len + wlen > ana->maxlen) 192 goto bad; 193 194 bcopy(inbuf,outbuf,wlen); 195 outbuf += wlen; 196 len += wlen; 197 198 if (freebuf != NULL) { 199 kfree(freebuf, M_TEMP); 200 freebuf = NULL; 201 } 202 } 203 ana->outbuf = outbuf; 204 *ana->outlen = len; 205 ana->cont = cont; 206 207 if (!isonum_711(p->flags)) { 208 ana->fields &= ~ISO_SUSP_SLINK; 209 return ISO_SUSP_SLINK; 210 } 211 return 0; 212 213 bad: 214 if (freebuf != NULL) 215 kfree(freebuf, M_TEMP); 216 ana->cont = 1; 217 ana->fields = 0; 218 ana->outbuf -= *ana->outlen; 219 *ana->outlen = 0; 220 return 0; 221 } 222 223 /* 224 * Alternate name 225 */ 226 static int 227 cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana) 228 { 229 char *inbuf; 230 int wlen; 231 int cont; 232 233 inbuf = ".."; 234 wlen = 0; 235 cont = 0; 236 237 switch (*p->flags) { 238 case ISO_SUSP_CFLAG_CURRENT: 239 /* Inserting Current */ 240 wlen = 1; 241 break; 242 243 case ISO_SUSP_CFLAG_PARENT: 244 /* Inserting Parent */ 245 wlen = 2; 246 break; 247 248 case ISO_SUSP_CFLAG_HOST: 249 /* Inserting hostname i.e. "kurt.tools.de" */ 250 inbuf = hostname; 251 wlen = strlen(hostname); 252 break; 253 254 case ISO_SUSP_CFLAG_CONTINUE: 255 cont = 1; 256 /* FALLTHROUGH */ 257 case 0: 258 /* Inserting component */ 259 wlen = isonum_711(p->h.length) - 5; 260 inbuf = (char *)p + 5; 261 break; 262 263 default: 264 kprintf("RRIP with incorrect NM flags?\n"); 265 wlen = ana->maxlen + 1; 266 break; 267 } 268 269 if ((*ana->outlen += wlen) > ana->maxlen) { 270 /* treat as no name field */ 271 ana->fields &= ~ISO_SUSP_ALTNAME; 272 ana->outbuf -= *ana->outlen - wlen; 273 *ana->outlen = 0; 274 return 0; 275 } 276 277 bcopy(inbuf,ana->outbuf,wlen); 278 ana->outbuf += wlen; 279 280 if (!cont) { 281 ana->fields &= ~ISO_SUSP_ALTNAME; 282 return ISO_SUSP_ALTNAME; 283 } 284 return 0; 285 } 286 287 static void 288 cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 289 { 290 isofntrans(isodir->name,isonum_711(isodir->name_len), 291 ana->outbuf,ana->outlen, 292 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level, 293 ana->imp->im_flags, ana->imp->im_d2l); 294 switch (*ana->outbuf) { 295 default: 296 break; 297 case 1: 298 *ana->outlen = 2; 299 /* FALLTHROUGH */ 300 case 0: 301 /* outlen is 1 already */ 302 strcpy(ana->outbuf,".."); 303 break; 304 } 305 } 306 307 /* 308 * Parent or Child Link 309 */ 310 static int 311 cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana) 312 { 313 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift; 314 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK); 315 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK; 316 } 317 318 /* 319 * Relocated directory 320 */ 321 static int 322 cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana) 323 { 324 /* special hack to make caller aware of RE field */ 325 *ana->outlen = 0; 326 ana->fields = 0; 327 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 328 } 329 330 static int 331 cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana) 332 { 333 u_char *ptime; 334 335 ptime = p->time; 336 337 /* Check a format of time stamp (7bytes/17bytes) */ 338 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) { 339 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 340 ptime += 7; 341 342 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 343 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime, 344 ISO_FTYPE_RRIP); 345 ptime += 7; 346 } else 347 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 348 349 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 350 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime, 351 ISO_FTYPE_RRIP); 352 ptime += 7; 353 } else 354 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 355 356 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 357 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime, 358 ISO_FTYPE_RRIP); 359 else 360 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 361 362 } else { 363 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 364 ptime += 17; 365 366 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 367 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime); 368 ptime += 17; 369 } else 370 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 371 372 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 373 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime); 374 ptime += 17; 375 } else 376 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 377 378 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 379 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime); 380 else 381 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 382 383 } 384 ana->fields &= ~ISO_SUSP_TSTAMP; 385 return ISO_SUSP_TSTAMP; 386 } 387 388 static void 389 cd9660_rrip_deftstamp(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 390 { 391 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 392 } 393 394 /* 395 * POSIX device modes 396 */ 397 static int 398 cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana) 399 { 400 u_int high, low; 401 402 high = isonum_733(p->dev_t_high); 403 low = isonum_733(p->dev_t_low); 404 405 if (high == 0) 406 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low)); 407 else 408 ana->inop->inode.iso_rdev = makeudev(high, uminor(low)); 409 ana->fields &= ~ISO_SUSP_DEVICE; 410 return ISO_SUSP_DEVICE; 411 } 412 413 /* 414 * Flag indicating 415 */ 416 static int 417 cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana) 418 { 419 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */ 420 /* special handling of RE field */ 421 if (ana->fields&ISO_SUSP_RELDIR) 422 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana); 423 424 return ISO_SUSP_IDFLAG; 425 } 426 427 /* 428 * Continuation pointer 429 */ 430 static int 431 cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana) 432 { 433 ana->iso_ce_blk = isonum_733(p->location); 434 ana->iso_ce_off = isonum_733(p->offset); 435 ana->iso_ce_len = isonum_733(p->length); 436 return ISO_SUSP_CONT; 437 } 438 439 /* 440 * System Use end 441 */ 442 static int 443 cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana) 444 { 445 return ISO_SUSP_STOP; 446 } 447 448 /* 449 * Extension reference 450 */ 451 static int 452 cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana) 453 { 454 if (isonum_711(p->len_id) != 10 455 || bcmp((char *)p + 8,"RRIP_1991A",10) 456 || isonum_711(p->version) != 1) 457 return 0; 458 ana->fields &= ~ISO_SUSP_EXTREF; 459 return ISO_SUSP_EXTREF; 460 } 461 462 static int 463 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana, 464 RRIP_TABLE *table) 465 { 466 RRIP_TABLE *ptable; 467 ISO_SUSP_HEADER *phead; 468 ISO_SUSP_HEADER *pend; 469 struct buf *bp = NULL; 470 char *pwhead; 471 u_short c; 472 int result; 473 474 /* 475 * Note: If name length is odd, 476 * it will be padding 1 byte after the name 477 */ 478 pwhead = isodir->name + isonum_711(isodir->name_len); 479 if (!(isonum_711(isodir->name_len)&1)) 480 pwhead++; 481 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL, 482 ana->imp->im_flags, ana->imp->im_d2l); 483 484 /* If it's not the '.' entry of the root dir obey SP field */ 485 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent) 486 pwhead += ana->imp->rr_skip; 487 else 488 pwhead += ana->imp->rr_skip0; 489 490 phead = (ISO_SUSP_HEADER *)pwhead; 491 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length)); 492 493 result = 0; 494 while (1) { 495 ana->iso_ce_len = 0; 496 /* 497 * Note: "pend" should be more than one SUSP header 498 */ 499 while (pend >= phead + 1) { 500 if (isonum_711(phead->version) == 1) { 501 for (ptable = table; ptable->func; ptable++) { 502 if (*phead->type == *ptable->type 503 && phead->type[1] == ptable->type[1]) { 504 result |= ptable->func(phead,ana); 505 break; 506 } 507 } 508 if (!ana->fields) 509 break; 510 } 511 if (result&ISO_SUSP_STOP) { 512 result &= ~ISO_SUSP_STOP; 513 break; 514 } 515 /* plausibility check */ 516 if (isonum_711(phead->length) < sizeof(*phead)) 517 break; 518 /* 519 * move to next SUSP 520 * Hopefully this works with newer versions, too 521 */ 522 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length)); 523 } 524 525 if (ana->fields && ana->iso_ce_len) { 526 if (ana->iso_ce_blk >= ana->imp->volume_space_size 527 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size 528 || bread(ana->imp->im_devvp, 529 lblktooff(ana->imp, ana->iso_ce_blk), 530 ana->imp->logical_block_size, &bp)) 531 /* what to do now? */ 532 break; 533 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off); 534 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len); 535 } else 536 break; 537 } 538 if (bp) 539 brelse(bp); 540 /* 541 * If we don't find the Basic SUSP stuffs, just set default value 542 * (attribute/time stamp) 543 */ 544 for (ptable = table; ptable->func2; ptable++) 545 if (!(ptable->result&result)) 546 ptable->func2(isodir,ana); 547 548 return result; 549 } 550 551 /* 552 * Get Attributes. 553 */ 554 /* 555 * XXX the casts are bogus but will do for now. 556 */ 557 #define BC (rrt_func_t *) 558 static RRIP_TABLE rrip_table_analyze[] = { 559 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR }, 560 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP }, 561 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE }, 562 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 563 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 564 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 565 { "", 0, 0, 0 } 566 }; 567 568 int 569 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop, 570 struct iso_mnt *imp) 571 { 572 ISO_RRIP_ANALYZE analyze; 573 574 analyze.inop = inop; 575 analyze.imp = imp; 576 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE; 577 578 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze); 579 } 580 581 /* 582 * Get Alternate Name. 583 */ 584 static RRIP_TABLE rrip_table_getname[] = { 585 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME }, 586 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 587 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 588 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR }, 589 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 590 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 591 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 592 { "", 0, 0, 0 } 593 }; 594 595 int 596 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf, 597 u_short *outlen, ino_t *inump, struct iso_mnt *imp) 598 { 599 ISO_RRIP_ANALYZE analyze; 600 RRIP_TABLE *tab; 601 u_short c; 602 603 analyze.outbuf = outbuf; 604 analyze.outlen = outlen; 605 analyze.maxlen = NAME_MAX; 606 analyze.inump = inump; 607 analyze.imp = imp; 608 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 609 *outlen = 0; 610 611 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len), 612 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l); 613 tab = rrip_table_getname; 614 if (c == 0 || c == 1) { 615 cd9660_rrip_defname(isodir,&analyze); 616 617 analyze.fields &= ~ISO_SUSP_ALTNAME; 618 tab++; 619 } 620 621 return cd9660_rrip_loop(isodir,&analyze,tab); 622 } 623 624 /* 625 * Get Symbolic Link. 626 */ 627 static RRIP_TABLE rrip_table_getsymname[] = { 628 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK }, 629 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 630 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 631 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 632 { "", 0, 0, 0 } 633 }; 634 635 int 636 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf, 637 u_short *outlen, struct iso_mnt *imp) 638 { 639 ISO_RRIP_ANALYZE analyze; 640 641 analyze.outbuf = outbuf; 642 analyze.outlen = outlen; 643 *outlen = 0; 644 analyze.maxlen = MAXPATHLEN; 645 analyze.cont = 1; /* don't start with a slash */ 646 analyze.imp = imp; 647 analyze.fields = ISO_SUSP_SLINK; 648 649 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK); 650 } 651 652 static RRIP_TABLE rrip_table_extref[] = { 653 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF }, 654 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 655 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 656 { "", 0, 0, 0 } 657 }; 658 659 /* 660 * Check for Rock Ridge Extension and return offset of its fields. 661 * Note: We insist on the ER field. 662 */ 663 int 664 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp) 665 { 666 ISO_RRIP_OFFSET *p; 667 ISO_RRIP_ANALYZE analyze; 668 669 imp->rr_skip0 = 0; 670 p = (ISO_RRIP_OFFSET *)(isodir->name + 1); 671 if (bcmp(p,"SP\7\1\276\357",6)) { 672 /* Maybe, it's a CDROM XA disc? */ 673 imp->rr_skip0 = 15; 674 p = (ISO_RRIP_OFFSET *)((char *)p + 15); 675 if (bcmp(p,"SP\7\1\276\357",6)) 676 return -1; 677 } 678 679 analyze.imp = imp; 680 analyze.fields = ISO_SUSP_EXTREF; 681 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF)) 682 return -1; 683 684 return isonum_711(p->skip); 685 } 686